无法将参数传递给@selector方法？ [英] Can't pass arguments into @selector methods?

问题描述

我目前正在尝试使用标题为X的UIButton作为从视图中删除Sprite的方法。

I'm currently trying to use a UIButton titled "X" as a way to remove a Sprite from the view.

基本上，我的代码可以正常运行触摸Sprite，将消息发送给委托者（View Controller），该委托传递已选择的（Sprite *）精灵。在这个方法中，我在该sprite之上绘制一个UIButton。到目前为止，非常好。

Basically, my code works so that when a Sprite is touched, a message is sent to the delegate (View Controller) that passes the (Sprite *)sprite which has been selected. In this method, I draw a UIButton on top of that sprite. So far, so good.

然而，问题是我现在希望我的UIButton在按下按钮时运行@selector来删除该精灵。

However, the issue is I now want my UIButton to run a @selector to remove that sprite whenever the button is touched down.

最初我试过这个：

-(void)spriteSelected:(Sprite *)sprite{ //delegate method implementation
      [sprite.button addTarget:self action:@selector(removeSprite:sprite) forControlEvents: UIControlEventTouchDown]
}    

-(void)removeSprite:(Sprite *)sprite{
        [sprite removeFromSuperView];}

然而，似乎我不能像这样把参数放到选择器中。关于我如何调整这个的任何想法？

However, it seems I can't put arguments into the selector like that. Any ideas on how I can adjust this?

谢谢

推荐答案

您应该在 Sprite 类中执行此操作，因此在原始类中：

You should do this in the Sprite class, so in the original class:

-(void)spriteSelected:(Sprite *)sprite{
      [sprite youAreSelected];
} 

在 Sprite class：

-(void)youAreSelected {
    [self.button addTarget:self action:@selector(removeMe:) forControlEvents: UIControlEventTouchDown];
}

-(void)removeMe:(id)sender {
    [self removeFromSuperView];
}

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